Eyeglasses



(No Model.)

H. D. MARTN.

m BYEGLASSBS. f No. 424,217. Patented Mar. 25, 1890.

WIT/VESSES:

N. PETERS. Phowllimugnpner, wnhngw". D. c.

UNITED STATES PAT-ENT OFFICE.

HERBERT D. MARTIN, oriiHLADELPriiA, PENNSYLVANIA.

EYE-e LAS-SES.

' srscrrrcmrorr forming part of` Letters Patent 424,217, dated Maren 25, 1890.

' Application filed Jun'i, 1889. serai NQ. classe. i(No man.)

To all whom t may oon/cera:

Be it known that I, HERBERTD. MARTIN,

. of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have in vented a newrand useful Improvement in Eyeglasses, of which the following is a full,

. clear, and exact description.

My invention relates tofan improvement .in eyeglasses, especially to an improvement uponthc spring thereof, and has for its object' to provide a spring `capable- Aof being p worn upon the fleshy or tissue portion of the nose in contact Wi th the latter, and which will effectually. and underV vall conditions, when Worn, retain the lenses in a proper horizontal plane. Y

The object of the invention is alsofto provide a spring which will fit comfortably upon and conform to the contourof the nose, and

which will cause the bridge of the nose to sustain the major portion ofthe weight of Y the lenses.

A' further object of the invention is todisvpense with `the unsightly'spring now in general use and provide a4 spring of neater ap,

pearance, lighter and more economic in construction, which willl hold the lenses straight before the eyes, (after the manner of spectacles,)` and which, in fact,`will embrace all the principles of spectacles without the unsightly bow.

Another object of the invention is to pro- Lvidea-spring capableof being manipulated upon a horizontal'plane, andwherein, when once adjusted to the nose, it will thereafter always maintain the lenses the same distance from'theeyes. Y

The invention consistsin the combination, with the lenses or lens-frames of an eyeglass, of a spring connecting the lenses or frames, bowed forward at an angle'totheir horizontal axis, and in the novel construction of the spring, as will be hereinafter fully set forth, and pointed out in the claims. v A

Reference is to be had to the accompanying drawings, forming a part of this speciiication, in which similar iigures of reference indicate corresponding parts inA all the views.

Figure l illustratesthe application of the improved glasses. Fig. 2 is a perspective view ofthe glasses detached.1 and Fig. 3 is an end view of the same.

ln reyeglasses as at present constructed the connecting-spring extends upward beyond and out of contact with the bridge of nthe nose, and is more or less unsightly, and the clamps orgrabs are compelled to perform a dual f unction-enamely, to support the lenses and to retain the glasses in position upon the nose.

O ne of the great disadvantages of the ordinary eyeglass isthat the spring and'clamps or grabs combined do not maintain the lenses 'straight e before the eyes or in the same hori zontal plane. The disadvantage becomes a very :serious objection when cylinder-lenses are employed, as it is absolutely necessary that both lenses be kept straight before the eyes.

To overcome the above and other objections that may be ,urged againstVY the present style of eyeglasses is the obj ect of the invention, and a further object is to so improve the construction that eyeglasses'may be worn with all the comfort of spectacles and without the inconvenience of the bows. This I attain bylconnecting the lenses lO or lensframes of the glasses by a bow-spring l1, which spring is given an upward and outward inclination, whereby it is at an angle to` the plane of the lenses, as illustrated inf'Figs.

gage with the sides ofthe nose, as in. other fcrms'of eyeglasses. To open the spring, it is bentoutward in a horizontal plane, and

Awhen so bent it is placed upon the nose, and

when in position and the spring is permitted to contract it rests firmly upon the bridge of fthe-nose, near the forehead, `whereby the Vrclamps or grabs contact with the fleshy or tissue portionA of the nose. By this construction the bridge of the nose is made to sustain the weight ofthe lenses, and the grabs or clamps simply serve to retain the glasses upon l e the nose when the wearer leans forward.

Itis evident that since the spring is opened in a horizontal plane only it is'impossible for the lenses to sag in the least, and when once adjusted straight to the eyes they will always maintain that positionv when Worn.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. Eyeglasses khaving an upwardly and for- Wardly extending spring constructed to it and rest upon the nose of the wearer, substaniially as and for the purpose specified.

2. The combination, with the lenses or lensframesof an eyeglass, of an upwardly and inclination of the bridge of the. nose, substantially as shown and described. v

3. The combination, with the lenses or lensframe, of the upwardly and forwardly extending spring 11, adapted to rest upon the nose of the wearer, and the grabs or clamps 13, secured to `the ends of the spring, the said grabs or clamps being approximately parallel with the lenses, substantially as herein shown and described. y

HERBERT D. MARTIN.

' Witnesses:

S. E. WILSON, C. W. BRUSH. 

